Use at() for Arrays in JavaScript (Transpiling vs Polyfilling, ‘this’, Babel & core-js)

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3万回視聴・ 1151いいね・ 2023/08/07

Use at() for Arrays in JavaScript (Transpiling vs Polyfilling, ‘this’, Babel & core-js)

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⏱️ Timestamps:
0:00 Old [ ] syntax
0:11 NEW at() method
0:38 Strings (charAt ❌)
1:01 Array methods
1:14 Out of bounds
1:21 Crucial: Browser support
1:58 Transpiling (Babel)
2:37 Polyfilling (core-js)
4:53 'this' keyword
6:12 Backwards (-1)
7:08 IMPORTANT: Transpiling vs Polyfilling
7:22 Next.js
8:50 What to use?

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